查询词典 synthesis

Three methods for synthesis of coumarin were introduced in the article,and their advantages and disadvantages were compared.

对香豆素常用的三种合成方法进行了介绍，对其工业化生产的优缺点进行了对比，最终选定了水杨醛法，并给出了工艺流程图和操作步骤。

So right in ionic liquid medium of coumarin synthesis of high significance.

因此对在离子液体介质中的香豆素合成具有很高的研究意义。

The method of coumarin synthesis using salicylaldehyde was selected,flow chart and operation process were studied in this paper.

对香豆素常用的三种合成方法进行了介绍，对其工业化生产的优缺点进行了对比，最终选定了水杨醛法，并给出了工艺流程图和操作步骤。

Density functional theory has been successfully used to predict the kinetic properties and electronic structure of coumarin and spectral characteristics, and it can effectively reduce the blindness and unnecessary waste in synthesis and application of coumarin.

密度泛函理论已成功用于预测反应动力学特性和香豆素的电子结构和光谱特性，可以有效地减少香豆素合成和应用中的盲目性和不必要的浪费。

It is applied widely in the areas covering thermal-controlled nuclear fusion, space science, environmental science, micro electronics, information technology, material synthesis and processing, national defense and high tech.

等离子体物理学是一门蓬勃发展的新兴学科，其应用领域包括受控热核聚变、空间科学、环境科学、微电子与信息产业、材料合成与处理、国防和高技术应用等诸多方面。

Design and synthesis of materials with large two-photon absorption cross-section is the important basis of its development.

本论文对卟啉衍生物，咔唑衍生物和杯[4]芳烃衍生物进行了系统的理论研究。

Synthesis of the raw materials of these two substances is croton oil, the use of cultivation in Asia crotonaldehyde seed extract vegetable oil, the whole process of only five steps.

合成这两种物质的原料是巴豆油，利用种植在亚洲的巴豆种子提取植物油，整个合成过程只需要五步。

Second is to analyze the metal blocks left in the crucible after the synthesis experiments.

第二部分则是检视分析在电弧实验后仍留在坩埚内的金属块。

According to the test result,the process of synthesis of cryolite from sodium fluorosilicate by ammonia method and the optimum process parameters are introduced in detail.

根据试验研究结果，详细介绍了氟硅酸钠氨法脱硅、氨化液化学合成制取冰晶石的工艺流程和优惠工艺技术参数，以及在制取过程中应着重注意控制的工艺条件，有效地解决了在以往生产中产品除硅、硫杂质难及产品灼烧失量大等问题。

Objective: To analyze the factors which affected the synthesis of melanin of of Cryptococcus neoformans and the mechanism of C. neoformans preferentially grew in the brains of human and experimental animals.

目的：分析新生隐球菌黑色素生成的影响因素，初步探讨黑色素与新生隐球菌脑膜炎的相互关系。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失